Application
Various CPUs with graduated levels of performance are available for SIMATIC S7-1500:
• CPU 1511-1 PN:
for applications with medium requirements on the program scope and processing speed, for distributed setup via PROFINET IO.
• CPU 1513-1 PN:
for applications with medium/high requirements on the program scope and processing speed, for distributed setup via PROFINET IO.
• CPU 1516-3 PN/DP:
for applications with high requirements on the program scope and processing speed, for distributed setup via PROFINET IO and PROFIBUS DP. The additional integrated PROFINET interface with separate IP address can be used, for example, for network separation.

Design
All CPUs have a rugged, compact plastic enclosure with a display integrated in the front flap of the control.
The front of the controller contains:
• LEDs to indicate status and errors
The CPUs also include:
• a slot for the SIMATIC memory card;
these memory cards are required for operation.
• Mode switch
• Connection for PROFINET IO IRT (2-port switch)
• Connection for PROFIBUS (only CPU 1516-3 PN/DP)
• Connection for PROFINET (only CPU 1516-3 PN/DP)

Function• Performance
o Faster command processing, depending on the CPU type, language extensions and new data types
o Even shorter response times of the CPUs due to considerably faster backplane bus
o Powerful network connection:
each CPU is equipped with PROFINET IO IRT (2-port switch) as a standard interface. The CPU 1516-3PN/DP also has an integrated PROFINET interface, e.g. for network separation.• Integrated technology
o Connection of analog and PROFIdrive-capable drives via standardized blocks (PLCopen)
o Support of speed-controlled and positioning axes as well as external encoders
o Trace functions for all CPU variables, both for diagnostics in real time as well as for sporadic error detection
o Comprehensive control functionalities, e.g. easily configurable blocks for automatic optimization of the control parameters for optimum control quality• Isochronous mode
o Synchronous coupling of distributed signal acquisition, signal transmission, and program execution to the cycle of PROFIBUS and PROFINET with constant bus cycle time• Security Integrated
o Password-based know-how protection against unauthorized reading and modification of program blocks
o Copy protection for tying individual blocks to the serial number of the SIMATIC memory card: The block can only run if the configured memory card is inserted into the CPU.
o 4-level authorization concept:
Communication to the HMI devices can also be restricted.
o Manipulation protection:
The controller recognizes changed or unauthorized transmissions of the engineering data.• Design and handling
o Display for displaying overview information:
e.g. station name, higher level designation, location designation, etc., diagnostic information, module information, display settings.
o Possible operations on the display:
set addresses, set date and time, select operating mode of CPU, reset CPU to factory settings, disable/enable display, activate protection levels.• Integrated system diagnostics
o System diagnostics information is displayed consistently and in plain text in the display, TIA Portal, HMI devices and web server, even for messages from the drives, and updated even if the CPU is in STOP mode.
o Integrated into the firmware of the CPU, no special configuration is required• SIMATIC memory card (required for operation of the CPU)
o Used as plug-in load memory or for updating the firmware.
o Additionally for storing additional documents or csv files (for recipes and archives)
o Creation of data blocks for storage/reading of data via SFCs of the user program• Datalog (archives) and recipes
o Storage of csv files for recipes and archives on the SIMATIC memory card;
easy access to plant-relevant operating data using Office tools or via a web server
o Easy access to configuration data of the machine by means of a web browser or SD card reader (two-way data exchange from and to the controller)• Programming
o Programming with STEP 7 V12
o Migration tool for migrating from SIMATIC S7-300/S7-400 to S7-1500
o STEP 7 V11 projects can continue to be used with STEP 7 V12 in compatibility mode.
o S7-1200 programs can be implemented on the S7-1500 via copy & paste.